Oku-sama wa Joshi KōseiOku-sama wa Joshi Kōsei.

Oku-sama wa Joshi Kōsei (おくさまは女子高生; lit. 'My Wife is a High School Girl') is a Japanese manga series written and illustrated by Hiyoko Kobayashi. It started in the supplementary edition of Shueisha's seinen manga magazine Weekly Young Jump, Young Jump Zōkan Mankaku in January 2001, and transferred to the main magazine in October of the same year, concluding in March 2007. Its chapters were collected in 13 volumes.